JSFiddle - React, Tailwind, and code Playground
by huston007
HTML
<div id="content">
<select id="sel">
<option value="1">Раз</option>
<option value="2">Два</option>
</select>
</div>
<span id="result"></span><br>
<button id="check">check</button>
JavaScript
$("#check").click(function(){
$("#result").html("Выбранное значение:" + $("#sel").val() );
var selected = $('#sel > option[selected]').val();
console.log(selected);
//console.log( $("#sel :selected").size())
});